After running a full course of Maracyn and using Anti-Baterial food, the fish have shown no improvement. I still think its columnaris, but I can't figure out what to do now. All the fish are showing the symptoms on their heads but one, and I really don't want to lose all of them.
/www.americanaquariumproducts.com/Columnaris.html . So far, the molly that was worst off is showing slight signs of improvement, and the others are pretty much the same. I just started this yesterday, so I'm not expecting immediate results.